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I E. PETERSEN.

MAGHINE FOR MAKING SPIRAL WIEE SPRINGS.

No. 416,642 Patented Dec. 3, 1889.

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No. 416,642. Patented Dec. 3,1889.

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No.416,642., Patented Dec.3', 1889.,

IIHWIIIINII i um IlfllllliIIIHIIIMII'WI"Willi I IEFHEHHFHIM Wv'ifwg eg w UILEIEIH IHIP r I I l UNITED STATES ENOCH PETERSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO & COMPANY, OF sAME PLACE.

PATENT OFFICE.

THE GIBSON, PARISH MACHINE FOR MAKING SPIRAL WIRE SPRINGS.

SPECIFICATION forming part of Letters Patent No. 416,642, dated December 3, 1889.

Application filed January 23, 1889- fierial No. 297,272. (No model.)

To all whom it may concern;

Be it known that I, ENOOH PETERSEN, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Machines for Making Spiral- Wire Springs, of which the following is a specification.

My invention relates to and consists in cer- IO tain improvements in machines of the class described in Letters Patent to Hiram E. Hall,

No. 350,979, of October 19, 1886, to which reference is also made for particular description of the construction and operation of themachines to which my improvements relate.

In the drawings, Figure 1 is an end elevation of a machine of the sort above mentioned. Fig. 2 is a front view of the same. 3 is a plan view of the machine. Fig. 4 is an elevation in perspective of a part of the wire-feed, ing mechanism. Fig. 5 is an enlarged detail, in elevation, of the mandrel and portions of the wire bending and cutting mechanism. Fig. 6 is an enlarged perspective, in detail, of the cutting. and bending mechanism. Fig. 7 is a cross-section on line y y of Fig. 5, surrounding parts being omitted. Fig. 8 is a sectional detail, in elevation, of a part of the cutting and bending mechanism, and Figs. 9 and 10 are detail viewsof minor parts. i

The frame-work of the machine is designated by letter A, and mounted therein in suitable bearings is a shaft B, bearing a driving-pulley B, and at one end of said shaft a pinion B meshes with a cog-Wheel O upon the counter-shaft O. The cog-wheel O has one of its arms slotted, as shown in Fig. 1, and the pitman c' has one of its ends pivotally secured in said slot, while its opposite end is pivoted to a segmental gear D, the latter being adapted to rock on a pivot d of'the frame. This segmental gear meshes with a pinion 6,

carried on the outer end of a horizontal shaft E, which bears also a gear-wheel E, and this in turn meshes with a pinion f, loosely mounted upon one end of a parallel shaft F, which carries at its opposite end the springforming cone or mandrel F. It is necessary that the mandrel F shall be almost or quite so stationary while the Wire is being severed and the spring is being removed from themandrel.

To accomplish this I provide an arm G, which is pivoted at g on the frame, and carries one member G of a clutch, in which the outer end of shaft F is socketed. The lower end of 5 5 said arm G travels in contact with the rim of the segment D, and it is yieldingly confined against the latter bymeans of a spring 9. The segment D has near its periphery a flange d, which is interrupted'by the notch d near one end. The flange cl at its end opposite the notch terminates short of the edge of the sector, as shown in Fig. 1, and the notch d is beveled, as shown in Fig. 3. The lower end of arm G is provided with a pivoted section or block g as shown in Fig.10, the lower side of which'is beveled, as clearly shown in said figure. During the forward stroke of the pitman this pivoted block 9 will ride on the top of the ledge 61' until it reaches the nick (Z On the return-stroke of the pitman this pivoted block, which drops down when it reaches the nick (1 will pass out of the nick and return on the outside of the ledge cl, as shown in Fig. 2, and when it reaches the end of said ledge will be forced in against the face of the sector-by the spring g, in position to make the forward-stroke again.

A leverI-I is pivoted at it upon the arm G. One arm of said lever extends vertically and engages the clutch member G, and the other arm extendsinward or horizontally. A spring I is secured rigidly to pivot g, bears at its free end upon the upper side of the horizontal armof lever 11, and thereby tends to force the vertical arm of said lever outwardly, which, by reason of its engagement with the clutch-member G, tends to force the latter outwardly. The loose pinion f has the fellow of. clutch G on its side, and the latter is keyed 0 to the shaft F, but is journaled to rotate in. the arm G. Now, when the pitman is on its forward stroke and the lower end 'of arm G rideson top of the flange or ledge d, spring g will force the clutch G into engagement 5 with its fellow on the loose pinion f, and the gears e E will cause the rotation of shaft F. On the return-strpke of the pitman, when the lower end of arm G travels on the side of the ledge cl, the spring will be compressed, IOC

and spring I, acting-through the medium of lever H, will assist to force the clutch-member G out of engagement with its fellow, the pinion f will revolve loosely on the shaft F, and the latter will remain stationary.

The means for securing the end of the wire to the end of the mandrel may be substantially as shown in said patent to Hall, and I provide a pivoted arm J operated by a lever which will be operated intermittingly by a cam on a shaft L, which is rotated by means of bevel-gears from the shaft as shown in Fig. 3, whereby the arm J is caused to engage and hold the end of the wire while the coil is forming, and is released after the coil is formed in order to permit its removal. Said shaft L also operates the mechanism for feeding the wire along the spring-forming cone, and which I will now proceed to describe.

lVI designates a carriage, similar to that described in said lrIall patent, having an upright K, the lower portion of the same being shown in Fig. 2 and the upper portion in Fig.

4. Said carriage is caused to reciprocate on a rod m by means of a cam M, carried on the end of shaft L, said cam being adapted to operate upon rollers m on the carriage-frame. The upper end of said carriage consists of a rectangular frame, (shown in Fig. 4,) having tension rollers or sheaves, over which the wire is passed, as clearly shown in said figure, and the movement of the upper end of said carriage is governed by a guide N, having a slot 91. therein, in which a pin n of the carriage-frame travels. Said frame will be flexible and pivotally jointed, so that as it reaches the inner limit of its stroke it may be lifted up so as to bring the wire into engagement'with the cutting mechanism.

It will be understood that the carriage is reciprocated at the same time that the shaft F, carrying the spring-forming cone or mandrel, is rotated.

In Fig. 5 the spring is shown coiled about the mandrel and in process of being severed by the cutting mechanism. This cutting mechanism comprises aknife, carrying-block 0, having a shearing-die o and fixed pin 0', over which the wire is bent, and a cam P,

which forces the wire against'the shearing.

block 0, and having a lip or projection 17, which bends the ends of the wire after it is severed around the fixed pin 0, whereby an attaching end is provided on said wire, and

tracting the fixed pin or stud 0'.

ment R.

thereby is saved an extra operation, heretofore practiced in the formation of wire springs. The cam P is carried on the end of a vertical shaft Q, which carries toward its upper end a segment-gear R, which is made in two parts, the top or upper portion bearin g the teeth, and which is adjustable on the lower portion by means of the set-screws r r, all of which is shown in Fig. 7.

The purpose of the adjustment is to enable the rotation of the cam in unison with the other operations and to adapt the device for use in the making of different sizes of springs.

Shaft Q is rotated through the intervention of a horizontal shaft S, having a miter-gear s enmeshed with the teeth of the segment R, and which shaft is rotated by means of a rack T, Fig. 2, which engages the teeth of a pinion s on the shaft S. The rack itself is actuated by means of a rock-arm U, which is rocked by means of the cam it on the shaft 0, Figs. 3 and 9.

In Fig. 8 is shown the provisions for re- Said pin is vertically adjustable, and is seated upon a spring having a bearing in an enlargement of the aperture through which the pin 0 passes, as clearly shown in Fig. 8. The upper end .of said pin is cam-faced and travels in contact with the rim'of the lower face of the seg- This rim is cut away at one point, as shown at r, Fig. 8, and the pin is there shown with its upper end in said opening and its lower end retracted so .as to be flush with the bottom of the block 0. The purpose of retracting this pin is to permit the ready removal of the spring from the cone after it has received the bend indicated by dotted linesin Fig. 6.

I claim In a machine for making coil-wire springs,

the combination, with a shearing-knife and a fixed pin, of a rotatable shaft bearing a cam adapted to force the wire against the knife and having a projection adapted to bend the end of the severed wire about. the fixed pin, substantially as described.

' ENOOH PETERSEN.

Vitnesses:

G. O. LINTHICUM, T. D. BUTLER. 

